<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>富文本编辑</title>
    <style>
        .editorBox {
            width: 400px;
            height: 400px;
            background-color: #e4e4e4;
        }
    </style>
</head>
<body>
    <!-- 使文档可编辑 -->
    <div class="editorBox" contenteditable></div>
</body>
</html>